washingtonian wrote:Is it proper etiquette to send an email or call? If it's literally coming down to the deposit deadline, can we just let the deadline lapse and assume they know we are not attending? Or, do we still need to send in the letter they enclosed in our acceptance package or an email?

At this point if you're waiting till the actual day of the deadline I would just let it lapse. But if you're sure today shoot them an email.